Volume 310 - XVII International Conference on Hadron Spectroscopy and Structure (Hadron2017) - Session 4: Exotic states and candidates
Effects of $Z_b$ states in $\Upsilon(3S, 4S)$ dipion transitions
Y.H. Chen, M. Cleven, J.T. Daub, F.K. Guo*, C. Hanhart, B. Kubis, U.G. Meissner and B.S. Zou
*: corresponding author
Full text: pdf
Pre-published on: February 16, 2018
Published on: March 20, 2018
Abstract
We analyze the effects of the $Z_b$ states in the dipion transitions from the $\varUpsilon(3S,4S)$ to the lower $\varUpsilon$ states. It is found that the $Z_b$'s, together with the properly treated $\pi\pi$ final-state interaction, are essential to reproduce the double-bump structure in the dipion invariant mass distribution of the $\varUpsilon(3S)\to\varUpsilon(1S)\pi\pi$ transitions. We also point out that a reliable extraction of the $Z_b\varUpsilon(nS)\pi$ coupling constants is crucial to finally settle the $Z_b$ contributions to these transitions.
DOI: https://doi.org/10.22323/1.310.0117
How to cite

Metadata are provided both in article format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in proceeding format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.